Structure 14306600000000 · Clinton County, IL

Tr 137/sand Ridge over Prairie Creek

Carries Tr 137/sand Ridge over Prairie Creek, 1 Mi SE Huey.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT62 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

62 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built1948rebuilt 1972
Length62.0 ft18.9 m
Daily traffic225counted 2020
Last inspectedJanuary 2025every 24 months

Location

StateIllinois
CountyClinton
Location1 Mi SE Huey
CarriesTr 137/sand Ridge
CrossesPrairie Creek
Coordinates38.59588, -89.28261

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length62.0 ft (18.9 m)
Max Span59.1 ft (18 m)
Deck Width20.0 ft (6.1 m)
Deck Area115.3 sq m
Main Spans1
Year Built1948 (reconstructed 1972)

Traffic

Avg Daily Traffic225 (2020)
Truck Traffic8%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number014306600000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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